After much research, I bought 10 fertilized eggs Sunday. Placed them in my incubator. And have been a rotating, water adding, temperature checking mad(wo)man since. We candled today (super bright flash light) and much to our surprise all 10 eggs have the tell tale veins and dark spot. So what do I expect from here? I assumed about 1/2 would not be viable as that's what I had read. What are the chances all will continue to grow from now until hatch?